EP 0650574 B1 19991027 - CRYOGENIC REFRIGERATOR WITH SINGLE STAGE COMPRESSOR
Title (en)
CRYOGENIC REFRIGERATOR WITH SINGLE STAGE COMPRESSOR
Title (de)
TIEFSTTEMPERATURKÄLTEANLAGE MIT EINSTUFIGEM VERDICHTER
Title (fr)
DISPOSITIF DE REFRIGERATION CRYOGENIQUE A COMPRESSEUR A UN SEUL ETAGE
Publication
Application
Priority
- US 9404721 W 19940429
- US 5770893 A 19930504
Abstract (en)
[origin: US5337572A] A closed cycle refrigerating system for cryogenic temperatures using a single stage compressor with a refrigerant comprising a gas mixture. The refrigerating system includes a heat exchanger having a throttling orifice which is arranged to provide refrigeration, and a single stage oil lubricated compressor for compressing the refrigerant. The compressor is typically of the rolling piston type. The refrigerant is a mixture of at least one cryogenic gas having a normal boiling point below 120 degrees K and at least two other gases having normal boiling point temperatures below 300 degrees different from each other and from said one gas. There is also included means for cooling the compressed refrigerant and for circulating the cooled refrigerant to the heat exchanger and its throttling orifice and then back to the compressor. The system does not require any cascaded heat exchangers or intermediate phase separators.
IPC 1-7
IPC 8 full level
F25B 1/00 (2006.01); F25B 9/00 (2006.01); F25B 9/02 (2006.01); F25B 31/00 (2006.01)
CPC (source: EP US)
F25B 9/006 (2013.01 - EP US); F25B 9/02 (2013.01 - EP US); F25B 31/004 (2013.01 - EP US); F25B 2400/12 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
US 5337572 A 19940816; DE 69421357 D1 19991202; EP 0650574 A1 19950503; EP 0650574 A4 19980121; EP 0650574 B1 19991027; JP 2006105588 A 20060420; JP 3794024 B2 20060705; JP 4004520 B2 20071107; JP H08500177 A 19960109; WO 9427099 A1 19941124
DOCDB simple family (application)
US 5770893 A 19930504; DE 69421357 T 19940429; EP 94915944 A 19940429; JP 2005326757 A 20051110; JP 52548394 A 19940429; US 9404721 W 19940429